John C. Crownshaw

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Bishop's Stortford, GB

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Patents Grantslast 30 patents

Information Patent Grant
Submersible optical repeaters and optical fibre glands
- Patent number 4,678,270
- Issue date Jul 7, 1987
- Standard Telephones and Cables Public Limited Co.
- Duncan A. Gunn
- G02 - OPTICS
Information Patent Grant
Applying thermoplastics sleeve to crush resistant tubing
- Patent number 4,622,197
- Issue date Nov 11, 1986
- Standard Telephones and Cables Public Limited Company
- John C. Crownshaw
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
High pressure gland for optical fibres and/or electrical conductors
- Patent number 4,262,913
- Issue date Apr 21, 1981
- International Standard Electric Corporation
- Colin S. Parfree
- G02 - OPTICS